[sebhc] Re: ? Still need those chips WD2143 & WD1691

bill malcolm wm65805 at hotmail.com
Thu Dec 29 15:30:14 CST 2005

Sorry I forgot to send them
bill ..

  ----- Original Message ----- 
  From: Jack Rubin 
  To: sebhc at sebhc.org 
  Sent: Wednesday, July 06, 2005 11:52 AM
  Subject: Re: [sebhc] list archive and a specific question


  Docs for the H37 and H47 controllers are in the archive. The H37 docs are incomplete and look like proofs - the handwritten notation looks like Pat Swayne's handwriting, so maybe he'll chime in ...


  Lee Hart <leeahart at earthlink.net> wrote:
    Barry Watzman wrote:
    > There was an H8 disk controller (H17 type) on E-Bay, the auction ended last
    > night (Tues. night).

    I also have an H8 with no disk controller. The board I'd like to find
    for it is the H37/H47 controller. I'm even willing to build one myself
    if I can find enough documentation.

    I have built H37 controllers for the H89. In fact, I'm trying to do so
    now. I have PC boards, almost all the parts, and have one almost
    finished. If I can only find a source of Western Digital WD2143M-03 and
    WD1691PE chips I should be in business.

    The H8 board, being larger, may not have used these rare chips. There
    are alternate circuits, but they take more PC board space. Does anyone
    have a schematic and layout for the H8 H37 board?
    If you would not be forgotten
    When your body's dead and rotten
    Then wri! te of great deeds worth the reading
    Or do the great deeds worth repeating
    -- Ben Franklin, Poor Richard's Almanac
    Lee A. Hart, 814 8th Ave N, Sartell MN 56377, leeahart_at_earthlink.net

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